Tire pneumatic pressure monitoring system
Active Publication Date: 2006-07-11
DENSO CORP
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AI Technical Summary
Benefits of technology
[0013]This invention has an object of providing a monitoring system for monitoring pneumatic pressures in tires for vehicles having different number of tires and different arrangement
Problems solved by technology
In this monitoring system, if the receive data are directly transmitted to the monitoring device at a moment when the receiver has received electromagnetic wave signals transmitted from the detectors of other vehicles or from the detectors of other tires that are not corresponding to the receiver, then, the monitoring device may erroneously determine a decrease in the pneumatic pressure.
Namely, the receivers and the monitoring devices cannot be commonly used for the vehicles of different kinds.
Therefore, it is not possible to use the receivers and the monitoring devices in common for the vehicles of different kinds.
After all, among the vehicles of different types, it is not possible to build a monitoring system for monitoring pneumatic pressures in vehicle tires by using the same receivers or the monitoring device.
Method used
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Embodiment Construction
[0023]Referring to FIG. 1A, a vehicle is provided with a total of ten tires 4 which include a pair of right and left front wheel tires 4FL and 4FR provided at the front of the vehicle, two pairs of right and left rear wheel tires 4RLa, 4RLb, 4RRa and 4RRb provided at the rear of the vehicle, and two pairs of right and left central wheel tires 4MLa, 4MLb, 4MRa and 4MRb arranged near the center side of the vehicle in front of the rear wheel tires. Subscript “a” attached to the reference signs of the rear wheel tires and center wheel tires represents tires arranged on the right and left outer sides of the vehicle, and subscript “b” represents tires arranged on the insides of these tires.
[0024]These ten tires 4 are provided with respective detectors 10 (10FL, 10FR, 10RLa, 10RLb, 10RRa, 10RRb, 10MLa, 10MLb, 10MRa and 10MRb) which detect the pneumatic pressures in the tires 4 and transmit the detected results wirelessly.
[0025]The detector 10 of each tire 4 is constructed, as illustrated i...
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Tires of wheels of a vehicle incorporate detectors that detect the pneumatic pressures and transmit them wirelessly to a plurality of receivers installed on the vehicle. A monitoring device monitors the pneumatic pressures in the tires based on the tire data obtained by the receivers. The receivers and the monitoring devices are connected together through a single communication line, and the monitoring device obtains tire data from the receivers by polling. For each receiver, a receiver ID necessary for the communication with the monitoring device of the vehicle-side is set through a connector that connects the single communication line and the power source line to the receiver.
Description
CROSS REFERENCE TO RELATED APPLICATION[0001]This application is based on and incorporates herein by reference Japanese Patent Application No. 2003-94865 filed Mar. 31, 2003.FIELD OF THE INVENTION[0002]This invention relates to a tire pneumatic pressure monitoring system for a plurality of tires of a vehicle by receiving, through receivers installed on a vehicle, electromagnetic wave signals transmitted from detectors incorporated in the tires.BACKGROUND OF THE INVENTION[0003]A monitoring system for monitoring the pneumatic pressures in pneumatic tires, such as disclosed in US 2002 / 0047779A1 (JP-A-2002-67638), incorporates in tires of a vehicle detectors which include a pneumatic pressure sensor and a signal transmission circuit for wirelessly transmitting the result detected by the pneumatic pressure sensor. The monitoring system receives electromagnetic wave signals transmitted from the detectors through receivers mounted on the vehicle, so that a monitoring device monitors the pne...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60C23/00B60C19/00B60C23/04
CPCB60C23/007B60C23/0408B60C23/008B60C23/0442
Inventor WATABE, NOBUYA
Owner DENSO CORP